Spring bolt damping mechanism and lock

Abstract

The utility model discloses a spring bolt damping mechanism and a lock, and belongs to the technical field of anti-theft equipment. The spring bolt damping mechanism is used for being arranged in a lock shell of the lock, the spring bolt damping mechanism comprises a rack assembly, a gear and a first limiting piece, the rack assembly is used for being connected with a spring bolt assembly of the lock, and the rack assembly and the spring bolt assembly are relatively fixed in the moving direction of the spring bolt assembly; the gear is used for being rotatably connected with the lock shell, and the gear is meshed with the rack assembly; the first limiting piece is used for being connected with the lock shell, the rack assembly and the first limiting piece are in limiting fit in the first direction, the first direction is the direction in which the axis of the gear points to the rack assembly, and the first direction is perpendicular to the moving direction of the rack assembly. According to the scheme, the stretching speed of the spring bolt assembly can be reduced, and then noise generated by collision or abrasion between the spring bolt assembly and other parts of the lock due to the too high stretching speed is reduced; meanwhile, the situation that the rack assembly is separated from the gear when moving along with the spring bolt assembly, and the damping effect cannot be achieved can be prevented.

Description

Technical Field

[0001] This application belongs to the field of anti-theft equipment technology, specifically relating to a latch damping mechanism and a lock. Background Technology

[0002] In related technologies, locks are usually made of metal. When opening and closing the door, the latch assembly of the lock is prone to collision or friction with other parts, which can generate noise. In particular, the latch assembly that relies on elastic elements to achieve extension and retraction is in an accelerated process when it extends under the restoring force of the elastic elements. It stops moving only when the latch assembly hits the lock housing. The instantaneous rapid impact between the latch assembly and the lock housing can generate a lot of noise, which can cause discomfort to the user. Utility Model Content

[0003] The purpose of this application is to provide a latch damping mechanism and lock that can solve the problem in the related art where the latch assembly is prone to collision or friction with other components during movement, resulting in noise.

[0004] In a first aspect, embodiments of this application provide a latch damping mechanism, which is disposed within the lock housing of a lock and includes:

[0005] A rack and pinion assembly for connection with the bolt assembly of the lock, wherein the rack and pinion assembly and the bolt assembly are fixed relative to each other in the direction of movement of the bolt assembly;

[0006] A gear for rotatably connecting to the lock housing, the gear meshing with the rack assembly;

[0007] A first limiting member is used to connect with the lock housing. The rack assembly is engaged with the first limiting member in a first direction, which is the direction from the axis of the gear to the rack assembly, and the first direction is perpendicular to the moving direction of the rack assembly.

[0008] Secondly, embodiments of this application also provide a lock, which includes a lock housing, a bolt assembly, and the aforementioned bolt damping mechanism. The bolt assembly is telescopically disposed on the lock housing, and the rack assembly of the bolt damping mechanism is connected to the bolt assembly.

[0009] In this embodiment, the rack assembly is connected to the latch assembly and meshes with the gear. When the latch assembly extends or retracts, the linear motion of the rack assembly can be converted into the circular motion of the gear through the meshing of the gear and the rack assembly. During the conversion process, due to the influence of factors such as the radius and moment of inertia of the gear, the linear motion speed of the rack assembly is slowed down when it is transmitted to the circular motion of the gear, thereby indirectly slowing down the extension and retraction speed of the latch assembly. This can reduce the noise caused by the latch assembly colliding or wearing with other parts of the lock due to excessive extension and retraction speed.

[0010] Furthermore, the locking tongue damping mechanism also includes a first limiting member. In a first direction, the rack assembly is positioned in a limiting engagement with the first limiting member. This first direction is the direction from the gear's axis to the rack assembly, and is perpendicular to the rack assembly's direction of movement. In this way, the first limiting member prevents the rack assembly from shifting away from the gear, thereby improving the meshing stability between the rack assembly and the gear, and preventing the rack assembly from separating from the gear during the movement of the locking tongue assembly, thus preventing it from failing to provide a damping effect. Attached Figure Description

[0011] Figure 1 This is a perspective view of the lock disclosed in the embodiments of this application;

[0012] Figure 2 This is an exploded view of the lock disclosed in the embodiments of this application;

[0013] Figure 3 This is a front view of the lock disclosed in the embodiments of this application (a lock case plate that hides the lock case);

[0014] Figure 4 This is one of the schematic diagrams of the latch assembly and latch damping mechanism disclosed in the embodiments of this application from a stereoscopic perspective;

[0015] Figure 5 This is the second schematic diagram of the latch assembly and latch damping mechanism disclosed in the embodiments of this application from a three-dimensional perspective;

[0016] Figure 6 This is an exploded view of the latch assembly and latch damping mechanism disclosed in the embodiments of this application;

[0017] Figure 7 This is a perspective view of the locking tongue damping mechanism disclosed in the embodiments of this application;

[0018] Figure 8 This is an exploded view of the locking tongue damping mechanism disclosed in the embodiments of this application;

[0019] Figure 9 This is a schematic diagram of the fixed shell assembly, gear, first limiting member and second limiting member disclosed in the embodiments of this application from a three-dimensional perspective;

[0020] Figure 10 This is a schematic diagram of the fixed shell assembly, gear, first limiting member and second limiting member disclosed in the embodiments of this application from the main view perspective;

[0021] Figure 11 This is a diagram showing the connection relationship between the first fixed shell and the gear disclosed in the embodiments of this application from a three-dimensional perspective;

[0022] Figure 12 This is a diagram showing the connection relationship of the first fixing shell, adapter and fixing member disclosed in the embodiments of this application from a stereoscopic perspective;

[0023] Figure 13 This is a perspective view of the first fixing shell disclosed in the embodiments of this application;

[0024] Figure 14 This is a perspective view of the second fixing shell disclosed in the embodiments of this application;

[0025] Figure 15 This is a perspective view of the gear disclosed in the embodiments of this application;

[0026] Figure 16 This is a perspective view of the fastener disclosed in the embodiments of this application;

[0027] Figure 17 This is a diagram showing the connection relationship between the rotating component and the gear in a three-dimensional view, as disclosed in the embodiments of this application.

[0028] Figure 18 This is a top view of the lock disclosed in the embodiments of this application (the two lock case plates are in a separated state).

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Lock case; 110 - Lock case plate; 200 - Lock bolt assembly; 210 - Lock bolt; 220 - Pull plate;

[0031] 221 - Protrusion; 230 - First connecting part; 300 - Elastic element; 400 - Locking tongue damping mechanism;

[0032] 410 - Rack assembly; 411 - Tooth; 412 - Connecting plate; 413 - Slot; 414 - Groove;

[0033] 420 - Gear; 421 - First connecting groove; 422 - Second connecting groove; 430 - Fixed housing assembly;

[0034] 431-First fixed shell; 4311-Gear mounting part; 43111-Mounting cavity; 43112-Limiting groove;

[0035] 4312 - First fixed connection part; 4313 - Baffle plate; 4314 - Second fixing hole; 432 - Second fixing shell;

[0036] 4321 - Second fixed connection part; 4322 - Fixed rod; 4323 - Gear support part; 4324 - Mounting hole;

[0037] 433 - Second connecting part; 440 - First limiting member; 450 - Second limiting member; 460 - Guide space;

[0038] 470 - Fixing screw; 480 - Fixing element; 481 - Cylindrical part; 482 - Inner support part; 483 - Annular cavity;

[0039] 484 - Limiting part; 490 - Rotating part; 491 - Connecting protrusion. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0041] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] The following description, in conjunction with the accompanying drawings, details the locking tongue damping mechanism and lock provided in this application through specific embodiments and application scenarios.

[0043] refer to Figures 1-18 The present application provides a latch damping mechanism 400, which is disposed inside the lock housing 100 of the lock and is used to slow down the movement speed of the latch assembly 200 of the lock, thereby reducing the noise generated by the latch assembly 200 during movement.

[0044] The latch damping mechanism 400 may include a rack assembly 410 and a gear 420. The rack assembly 410 can be connected to the latch assembly 200 of the lock, and the rack assembly 410 and the latch assembly 200 are relatively fixed in the direction of movement of the latch assembly 200, so that the rack assembly 410 can move synchronously with the latch assembly 200. The gear 420 can be rotatably connected to the lock housing 100, and the gear 420 meshes with the rack assembly 410. In this way, through the meshing of the rack assembly 410 and the gear 420, the linear motion of the rack assembly 410 can be converted into the circular motion of the gear 420. During the conversion process, due to the influence of factors such as the radius and moment of inertia of the gear 420, the linear motion speed of the rack assembly 410 is slowed down when it is transmitted to the circular motion of the gear 420, which can indirectly slow down the extension and retraction speed of the latch assembly 200, thereby reducing the noise caused by the latch assembly 200 colliding or wearing with other parts of the lock due to excessive extension and retraction speed.

[0045] like Figure 8 and Figure 9 As shown, the latch damping mechanism 400 may further include a first limiting member 440, which can be used to connect with the lock housing 100. The rack assembly 410 and the first limiting member 440 can be engaged in a first direction, where the first direction is the direction from which the axis of the gear 420 points to the rack assembly 410, and the first direction is perpendicular to the direction of movement of the rack assembly 410. In this embodiment, the first limiting member 440 can prevent the rack assembly 410 from shifting away from the gear 420, thereby improving the meshing stability between the rack assembly 410 and the gear 420, and preventing the rack assembly 410 from separating from the gear 420 during the movement of the latch assembly 200 and failing to provide a damping effect.

[0046] It should be noted that when the gear 420 is above the latch assembly 200, the first direction can be from top to bottom. When the gear 420 is below the latch assembly 200, the first direction can be from bottom to top.

[0047] In optional embodiments of this application, such as Figure 9 As shown, the locking tongue damping mechanism 400 may further include a second limiting member 450. The second limiting member 450 may be parallel to the first limiting member 440 and spaced apart in the first direction. The rack assembly 410 and the second limiting member 450 may be engaged in a limiting fit in the opposite direction of the first direction. In this embodiment, the second limiting member 450 may restrict the rack assembly 410 from shifting or deforming in the opposite direction of the first direction, that is, the second limiting member 450 may restrict the rack assembly 410 from shifting or deforming toward the gear 420, thereby effectively preventing the rack assembly 410 and the gear 420 from jamming and reducing the degree of mutual wear between the rack assembly 410 and the gear 420.

[0048] In other embodiments, the latch damping mechanism 400 may also exclude the second limiting member 450.

[0049] In this embodiment, as Figure 9 As shown, a guide space 460 can be formed between the first limiting member 440 and the second limiting member 450. A portion of the rack assembly 410 is located within the guide space 460 and can slide along the guide space 460, thereby ensuring the meshing stability of the rack assembly 410 and the gear 420. Furthermore, the movement of the rack assembly 410 is not affected by the cumulative error during the assembly and movement of the locking tongue assembly 200.

[0050] In an optional embodiment of this application, the latch damping mechanism 400 may further include a fixed housing assembly 430, which can be used to connect to the lock housing 100. The gear 420 can be rotatably connected to the fixed housing assembly 430, and, as... Figure 9 and Figure 10 As shown, at least a portion of the gear 420 can be located within the fixed housing assembly 430, and the first limiting member 440 can be located within and connected to the fixed housing assembly 430. This configuration allows the fixed housing assembly 430 to partially enclose at least a portion of the gear 420 and a portion of the rack assembly 410, thereby providing a certain degree of dust or impurity protection. This reduces the impact of dust or impurities on the smoothness of movement of the rack assembly 410, and consequently reduces the impact of dust or impurities on the smoothness of movement of the latch assembly 200.

[0051] In other embodiments, the latch damping mechanism 400 may also exclude the fixed housing assembly 430.

[0052] In an optional embodiment, the fixing shell assembly 430 may include a first fixing shell 431 and a second fixing shell 432 connected to the first fixing shell 431. The first fixing shell 431 and the second fixing shell 432 may be connected to two opposing locking shell plates 110 of the locking shell 100, thereby improving the connection stability between the fixing shell assembly 430 and the locking shell 100. Of course, the fixing shell assembly 430 may also be connected to the locking shell 100 only through the first fixing shell 431 or the second fixing shell 432.

[0053] First limiting members 440 can be provided on both the first fixed shell 431 and the second fixed shell 432. The two edges of the rack assembly 410 in the thickness direction of the lock shell 100 respectively engage with the two first limiting members 440 in the first direction for upper limit engagement. This arrangement can, on the one hand, balance the force on the rack assembly 410, prevent the rack assembly 410 from deforming due to uneven force, and evenly distribute the load borne by the rack assembly 410 on the first fixed shell 431 and the second fixed shell 432, preventing stress concentration caused by the load being concentrated on one side when the first limiting member 440 is only provided on one side. On the other hand, the first limiting members 440 provided on both the first fixed shell 431 and the second fixed shell 432 can provide double-sided limiting for the rack assembly 410, which can provide more stable support for the rack assembly 410, thereby further improving the meshing stability between the rack assembly 410 and the gear 420.

[0054] Of course, the fixed shell assembly 430 may also be provided with only one first limiting member 440. The first limiting member 440 may be provided on the first fixed shell 431 or on the second fixed shell 432.

[0055] In this embodiment, both the first fixed shell 431 and the second fixed shell 432 may be provided with second limiting members 450. The two edges of the rack assembly 410 in the thickness direction of the lock shell 100 respectively engage with the two second limiting members 450 in the opposite direction of the first direction. This arrangement can balance the force on the rack assembly 410, prevent the rack assembly 410 from deforming due to uneven force, and make the load borne by the rack assembly 410 evenly distributed on the first fixed shell 431 and the second fixed shell 432, preventing stress concentration caused by the load being concentrated on one side when the second limiting member 450 is only provided on one side.

[0056] Optionally, the first fixed shell 431 and the second fixed shell 432 respectively engage with the rack assembly 410 in the thickness direction of the lock housing 100, so as to prevent the rack assembly 410 from shifting in the thickness direction of the lock housing 100 during movement.

[0057] In an optional embodiment, the latch damping mechanism 400 may further include a fixed member 480 and a rotating member 490. The rotating member 490 may be connected to the gear 420, and the fixed member 480 may be connected to the fixed housing assembly 430. The fixed member 480 may be provided with an annular cavity 483, and the rotating member 490 may be embedded in the annular cavity 483 and rotate relative to the fixed member 480. Furthermore, damping oil is filled between the cavity wall of the annular cavity 483 and the rotating member 490. With this configuration, when the latch assembly 200 moves and drives the gear 420 and the rotating member 490 connected to the gear 420 to rotate, the damping oil will dampen the rotation of the rotating member 490, making the extension and retraction process of the latch assembly 200 smoother, avoiding possible impacts and shaking when the latch assembly 200 extends or retracts rapidly, reducing the impact of the latch assembly 200 on the lock housing 100 and surrounding components, thereby further reducing the noise generated during the movement of the latch assembly 200.

[0058] In this embodiment, as Figure 16 As shown, the fixing member 480 may include a cylindrical part 481 and an inner support part 482 located inside the cylindrical part 481. An annular cavity 483 is formed between the inner support part 482 and the cylindrical part 481. The rotating member 490 may be sleeved on the inner support part 482 and may rotate around the inner support part 482.

[0059] Here, both the fixing component 480 and the rotating component 490 can be made of plastic. Since plastic generally has good compatibility with damping oil, it will not chemically react with the damping oil, ensuring the stability of the damping oil's performance. Furthermore, the plastic surface can better absorb the damping oil, forming a uniform oil film, allowing the damping oil to function more effectively and improving the stability and consistency of damping. The fixing housing assembly 430, gear 420, and rack assembly 410 can all be made of metal to ensure the rigidity of the fixing housing assembly 430, gear 420, and rack assembly 410 and to extend their service life.

[0060] In other embodiments, the latch damping mechanism 400 may also exclude the fixed member 480 and the rotating member 490. For example, the gear 420 may be directly rotatably connected to the fixed housing assembly 430 via a rotating shaft.

[0061] In some embodiments, such as Figure 8 As shown, one of the rotating component 490 and the gear 420 may be provided with a first connecting groove 421, and the other may be provided with a connecting protrusion 491. The connecting protrusion 491 is embedded in the first connecting groove 421, and the connecting protrusion 491 and the first connecting groove 421 can be engaged in a circumferential upper limit engagement with the gear 420 to achieve a detachable connection between the gear 420 and the rotating component 490. This arrangement facilitates the assembly and disassembly of the gear 420.

[0062] Of course, the rotating part 490 and the gear 420 can also be connected by fasteners 480 such as screws, or the rotating part 490 and the gear 420 can be set as an integral structure.

[0063] Optionally, such as Figure 13 As shown, the fixed housing assembly 430 may be provided with a gear mounting part 4311, and the gear mounting part 4311 may be provided with a mounting cavity 43111. The fastener 480 may be located inside the mounting cavity 43111, which facilitates the installation of the fastener 480. Of course, the fixed housing assembly 430 may also not have a gear mounting part 4311, and the fastener 480 may be connected to the first fixed housing 431 or the second fixed housing 432 of the fixed housing assembly 430.

[0064] One of the gear mounting part 4311 and the fixing member 480 can be provided with a limiting groove 43112, and the other can be provided with a limiting part 484. The limiting part 484 can be embedded in the limiting groove 43112, and the limiting part 484 and the limiting groove 43112 provide a limiting fit in the circumferential direction of the rotating member 490. This arrangement can not only realize the connection between the fixing member 480 and the gear mounting part 4311, but also facilitate the disassembly and assembly of the fixing member 480, which helps to reduce maintenance time and difficulty.

[0065] Of course, the fastener 480 can also be connected to the gear mounting part 4311 by fasteners such as screws.

[0066] Further, optionally, to improve the installation stability of gear 420, such as Figure 8 and Figure 14 As shown, a second connecting groove 422 may be provided on one of the second fixed housing 432 and the gear 420, and a gear support portion 4323 may be provided on the other. The gear support portion 4323 extends into the second connecting groove 422 to support the gear 420. Furthermore, the gear support portion 4323 can rotate relative to the second connecting groove 422 to avoid hindering the rotation of the gear 420.

[0067] In optional embodiments, such as Figure 8 As shown, a first fixing connection part 4312 may be provided on the first fixing shell 431, and a second fixing connection part 4321 may be provided on the second fixing shell 432. The second fixing connection part 4321 is provided with a first fixing hole, and a portion of the first fixing connection part 4312 can be embedded in the first fixing hole so that the first fixing connection part 4312 and the second fixing connection part 4321 are connected, thereby realizing the connection between the first fixing shell 431 and the second fixing shell 432.

[0068] Optionally, the fixing housing assembly 430 may further include a fixing screw 470. The second fixing housing 432 has a mounting hole 4324, through which the fixing screw 470 can pass and connect to the first fixing connection portion 4312. Here, the first fixing connection portion 4312 may have a threaded hole, into which the screw shank of the fixing screw 470 can extend and connect. This improves the connection strength between the first fixing housing 431 and the second fixing housing 432.

[0069] Alternatively, to further improve the connection stability of the first fixing shell 431 and the second fixing shell 432, a second fixing hole 4314 may be provided on the first fixing shell 431, and a fixing rod 4322 may be provided on the second fixing shell 432, the fixing rod 4322 extending into the second fixing hole 4314. Here, the second fixing hole 4314 may be located on the side of the gear mounting part 4311 opposite to the first fixing connection part 4312, which helps to ensure the force balance of the first fixing shell 431 and the second fixing shell 432.

[0070] In an optional embodiment, a baffle plate 4313 may also be provided on the first fixing shell 431. The baffle plate 4313 may be located above the first fixing connection portion 4312, and the end of the baffle plate 4313 facing away from the first fixing shell 431 may abut against the second fixing shell 432. In this embodiment, the baffle plate 4313 can provide a certain degree of protection against dust or impurities, preventing dust or impurities from falling onto the rack assembly 410 below the first fixing connection portion 4312.

[0071] Based on the latch damping mechanism 400 provided in the embodiments of this application, the embodiments of this application also provide a lock, which may include a lock housing 100, a latch assembly 200 and the latch damping mechanism 400 described in any of the above embodiments. The latch assembly 200 is telescopically disposed on the lock housing 100, and the rack assembly 410 of the latch damping mechanism 400 may be connected to the latch assembly 200.

[0072] The beneficial effects achieved by the lock provided in this application embodiment are consistent with the beneficial effects achieved by the latch damping mechanism 400 provided in this application embodiment, and will not be repeated here.

[0073] In an optional embodiment of this application, the latch assembly 200 may include a latch 210 and a pull plate 220 connected to the latch 210, and the rack assembly 410 may be connected to the end of the pull plate 220 near the latch 210. This arrangement allows the rack assembly 410 to be positioned forward, that is, the rack assembly 410 is positioned near the side of the lock housing 100 where the latch hole is provided, thereby reducing the impact of the latch assembly 200's swinging motion on the rack assembly 410.

[0074] Of course, the rack assembly 410 can also be connected to the end of the pull plate 220 away from the latch 210.

[0075] The distance between the gear 420 of the latch damping mechanism 400 and the end of the latch 210 away from the pull plate 220 in the moving direction of the latch assembly 200 can be less than or equal to half the length of the latch assembly 200. This arrangement allows the gear 420 to be positioned forward, that is, closer to the side of the lock housing 100 where the latch hole is located, thereby reducing the amount of oscillation of the rack assembly 410 and ensuring more stable transmission between the rack assembly 410 and the gear 420.

[0076] In other embodiments, the distance between the gear 420 of the latch damping mechanism 400 and the end of the latch 210 away from the pull plate 220 in the moving direction of the latch assembly 200 may also be greater than half the length of the latch assembly 200.

[0077] In an optional embodiment, one of the rack assembly 410 and the pull plate 220 may be provided with a groove 413, and the other may be provided with a protrusion 221. The protrusion 221 can be embedded in the groove 413, and in the moving direction of the latch assembly 200, the protrusion 221 is limited and engaged with the groove wall of the groove 413. In this embodiment, the limited engagement between the groove 413 and the protrusion 221 can establish a reliable connection between the rack assembly 410 and the pull plate 220, ensuring that the movement of the pull plate 220 can be accurately transmitted to the rack assembly 410 during the movement of the latch assembly 200. In addition, the limited engagement between the groove 413 and the protrusion 221 can realize the detachable connection between the rack assembly 410 and the latch assembly 200, thereby facilitating the maintenance or repair of the latch assembly 200 and the rack assembly 410.

[0078] Of course, the rack assembly 410 can also be fixedly connected to the pull plate 220 in a non-detachable manner. For example, the rack assembly 410 and the pull plate 220 can be cast as a single structure.

[0079] Optionally, the latch assembly 200 may further include a first connecting portion 230, through which the latch 210 and the pull plate 220 can be connected. The rack assembly 410 may also be provided with a groove 414, in which at least a portion of the first connecting portion 230 can be embedded. Furthermore, the first connecting portion 230 and the groove wall of the groove 414 can be in a limiting fit in the thickness direction of the lock housing 100. With this configuration, the limiting fit between the first connecting portion 230 and the groove wall of the groove 414 can prevent relative movement between the latch assembly 200 and the rack assembly 410 in the thickness direction of the lock housing 100.

[0080] Of course, the rack assembly 410 may not have the groove 414 provided. For example, the first connecting part 230 may be fixedly connected to the rack assembly 410.

[0081] In this embodiment, the rack assembly 410 may include a plurality of teeth 411 and a connecting plate 412. Each tooth 411 is disposed on the side of the connecting plate 412 opposite to the latch assembly 200, and each tooth 411 may be distributed along the moving direction of the latch assembly 200. The slots 413 and grooves 414 mentioned above may both be disposed on the connecting plate 412, and the two edges of the connecting plate 412 in the thickness direction of the lock housing 100 are respectively located in the two guide spaces 460 on the fixed housing assembly 430 and can slide relative to the guide spaces 460.

[0082] In an optional embodiment, the latch assembly 200 may include a bevel latch assembly, and the lock may further include an elastic element 300, which may be connected to both the bevel latch assembly and the lock housing 100 to drive the bevel latch assembly to extend. Here, the elastic element 300 may be connected to the pull plate 220 of the bevel latch assembly. In this embodiment, the elastic element 300 may be a torsion spring.

[0083] Of course, the latch assembly 200 may also include a square latch assembly.

[0084] In an optional embodiment, the latch damping mechanism 400 may further include a fixed housing assembly 430. One of the fixed housing assembly 430 and the lock housing 100 may be provided with a connecting hole, and the other may be provided with a second connecting portion 433, which connects to the connecting hole. In this embodiment, the connection between the second connecting portion 433 and the connecting hole simplifies the assembly structure of the fixed housing assembly 430 and the lock housing 100, making assembly and disassembly simple and convenient. During assembly, only the second connecting portion 433 needs to be inserted into the connecting hole; no additional tools or connectors are required, effectively saving assembly time and labor costs and improving assembly efficiency.

[0085] In other embodiments, the second connecting part 433 may not be provided on either the fixed shell assembly 430 or the lock shell 100, and the fixed shell assembly 430 and the lock shell 100 may be connected by screws or other connecting parts.

[0086] Optionally, each of the two opposing lock housing plates 110 of the lock housing 100 may be provided with at least two connecting holes, and each of the first fixing housing 431 and the second fixing housing 432 of the fixing housing assembly 430 may be provided with at least two second connecting parts 433, each of which can extend into the corresponding connecting hole. This arrangement can further improve the connection strength between the fixing housing assembly 430 and the lock housing 100.

[0087] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A latch damping mechanism, for use within the lock housing (100) of a lock, characterized in that, The locking tongue damping mechanism includes: A rack assembly (410) is used to connect to the latch assembly (200) of the lock, and the rack assembly (410) and the latch assembly (200) are fixed relative to each other in the moving direction of the latch assembly (200); A gear (420) is rotatably connected to the lock housing (100), the gear (420) meshing with the rack assembly (410); The first limiting member (440) is used to connect with the lock housing (100). The rack assembly (410) and the first limiting member (440) are engaged in a first direction. The first direction is the direction from the axis of the gear (420) to the rack assembly (410), and the first direction is perpendicular to the moving direction of the rack assembly (410).

2. The locking tongue damping mechanism according to claim 1, characterized in that, The locking tongue damping mechanism further includes a second limiting member (450), which is parallel to the first limiting member (440) and spaced apart in the first direction. The rack assembly (410) and the second limiting member (450) are engaged in a limiting cooperation in the opposite direction of the first direction.

3. The locking tongue damping mechanism according to claim 1, characterized in that, The latch damping mechanism further includes a fixed housing assembly (430) for connection with the lock housing (100), the gear (420) being rotatably connected to the fixed housing assembly (430), and at least a portion of the gear (420) being located within the fixed housing assembly (430), and the first limiting member (440) being located within the fixed housing assembly (430) and connected to the fixed housing assembly (430).

4. The locking tongue damping mechanism according to claim 3, characterized in that, The fixed shell assembly (430) includes a first fixed shell (431) and a second fixed shell (432) connected to the first fixed shell (431), wherein the first fixed shell (431) and the second fixed shell (432) are respectively connected to two opposite lock shell plates (110) of the lock shell (100); The first fixing shell (431) and the second fixing shell (432) are both provided with the first limiting member (440), and the rack assembly (410) is engaged with the two first limiting members (440) in the first direction at the two edges of the lock shell (100) in the thickness direction.

5. The locking tongue damping mechanism according to claim 3, characterized in that, The locking tongue damping mechanism further includes a fixed member (480) and a rotating member (490). The rotating member (490) is connected to the gear (420), and the fixed member (480) is connected to the fixed shell assembly (430). The fixed member (480) is provided with an annular cavity (483). The rotating member (490) is embedded in the annular cavity (483) and can rotate relative to the fixed member (480). The cavity wall of the annular cavity (483) and the rotating member (490) are filled with damping oil.

6. The locking tongue damping mechanism according to claim 5, characterized in that, The fixed housing assembly (430) is provided with a gear mounting part (4311), the gear mounting part (4311) is provided with a mounting cavity (43111), and the fixing member (480) is located in the mounting cavity (43111); One of the gear mounting part (4311) and the fixing member (480) is provided with a limiting groove (43112), and the other is provided with a limiting part (484). The limiting part (484) is embedded in the limiting groove (43112), and the limiting part (484) and the limiting groove (43112) are in a limiting engagement in the circumferential direction of the rotating member (490).

7. A lock, characterized in that, The lock includes a lock housing (100), a latch assembly (200), and a latch damping mechanism (400) according to any one of claims 1-6, wherein the latch assembly (200) is telescopically disposed on the lock housing (100), and the rack assembly (410) of the latch damping mechanism (400) is connected to the latch assembly (200).

8. The lock according to claim 7, characterized in that, The latch assembly (200) includes a latch (210) and a pull plate (220) connected to the latch (210), and the rack assembly (410) is connected to the pull plate (220) at one end near the latch (210); The distance between the gear (420) of the latch damping mechanism (400) and the end of the latch (210) away from the pull plate (220) in the moving direction of the latch assembly (200) is less than or equal to half the length of the latch assembly (200).

9. The lock according to claim 8, characterized in that, One of the rack assembly (410) and the pull plate (220) is provided with a groove (413), and the other is provided with a protrusion (221). The protrusion (221) is embedded in the groove (413), and in the moving direction of the latch assembly (200), the protrusion (221) is in a limiting fit with the groove wall of the groove (413).

10. The lock according to claim 8, characterized in that, The latch assembly (200) further includes a first connecting part (230), through which the latch (210) and the pull plate (220) are connected; The rack assembly (410) is also provided with a groove (414), at least a portion of the first connecting part (230) is embedded in the groove (414), and the first connecting part (230) and the groove wall of the groove (414) are engaged in a limiting fit in the thickness direction of the lock housing (100).

11. The lock according to claim 7, characterized in that, The latch damping mechanism (400) further includes a fixed housing assembly (430), one of which, the fixed housing assembly (430) and the lock housing (100), is provided with a connecting hole, and the other is provided with a second connecting part (433), which is connected to the connecting hole.

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